Known industry wide for their rugged construction and reliability. Gast Air Motors, non- lubricated air motors and air powered gear motors are used in a variety of applications. Lubricated air motors come in seven basic models ranging from 1/3 to 9.5 HP motor speeds are variable from 300 to 10,000 RPM. Choose from hub, foot, face and NEMA C-flange mountings; clockwise, counter-clockwise or reversible rotations; four and eight vane models are available. Oilless air motors are available in three models, hub, foot and NEMA C-flange mountings, .18 to .82 HP, clockwise and counter-clockwise rotations, all units are four vane models. Gearmotors are available in right-angle and in-line models offering a maximum torque range of 73 to 5,200 lb. In. and gear ratios from 10:1 to 60:1 single reduction gear reducers. Features Variable Speed Non-Electrical Sparking Cool Running Compact and Portable Operate in All Positions Mounting Flexibility Will Not Burn Out Typical Applications Mixing Equipment Conveyor Drives Pump Drives Food Packaging Pharmaceutical Packaging Hoists and Winches Hose Reels Fiberglass Choppers Tension Devices Turntables Compressed air into an air motor forces the sliding vanes out of the eccentric-mounted rotor. An extended shaft on the rotor spins to perform the work. AIR MOTORS AIR POWERED GEAR MOTORS How to select an air motor. Air motors differ in many ways from other power sources. These unique operating characteristics must be considered when selecting an air motor for a particular job. It is easy to change horsepower and speed of an air motor by throttling the air inlet. Therefore, the best rule of thumb for selecting an air motor is to choose one that will provide the horsepower and torque needed using only two-thirds [2/3] of the line pressure available. The full air line pressure will then be available for overloads and starting. Output power and speed: The output power of an air motor is relative to speed and to air pressure. Torque vs Speed: 1. An air motor slows down when load increases. . . . At the same time its torque increases to a point where it matches the load. It will continue to provide increased torque all the way to the stalled condition, and it can maintain the stalled condition without any harm to the motor. 2. As the load is reduced, an air motor will increase speed and the torque will decrease to match the reduced load. 3. When the load on an air motor is either increased or decreased, speed can be con- trolled by increasing or decreasing air pressure. 4. Starting torque of an air motor is lower than running torque. While this provides smooth, no-shock starting, it is necessary to have additional air line pressure for starting under heavy loads. Air consumption vs speed: Air consumption increases as speed and air pressure is increased. AIR MOTORS Operating Data Maximum Torque Max. Output Max. Air Max. Gear Line Speed Power Torque Consumption Speed Model Ratio Pres. rpm hp lb. in. cfm rpm lb. in. 1AM (A) 10,000 0.45 2.75 20.5 650 5.6 1UP (B) 6,000 0.45 5.25 27 500 6.00 2AM (A) 3,000 0.93 19.50 30 350 26.10 4AM (A) 3,000 1.70 36.00 78 300 56.00 6AM (A) 3,000 4.00 84.00 128 300 115.00 8AM (A) 2,500 5.25 132.00 175 300 185.00 16AM (A) 2,000 9.50 290.00 275 300 372.00 NL22 (B) 4,000 .18 2.80 18.5 1000 4.30 NL32 (B) 2,000 .42 13.50 30 300 21 NL42 (B) 2,000 .82 25.50 41 500 44 GEARMOTORS 1AM-NRV 15:1 A 350 0.34 62 21.0 30 72 1UP-NRV 15:1 C 400 0.32 49 21.0 30 71 4AM-RV 10:1 B 300 1.26 274 57.5 30 425 4AM-RV 15:1 B 200 1.25 400 60.0 20 640 4AM-70C 20:1 A 150 1.17 487 71.0 15 740 4AM-70C 40:1 A 75 0.95 800 71.0 7 1255 4AM-70C 60:1 A 50 0.82 1040 71.0 5 1640 6AM-22A 10:1 A 300 3.40 720 130.0 30 950 6AM-22A 20:1 A 150 2.65 1100 130.0 15 1550 6AM-22A 40:1 A 75 2.10 1725 135.0 8 2500 8AM-32A 20:1 A 125 3.70 1850 177.0 15 2550 16AM-13 20:1 A 100 6.50 4175 275.0 15 5175 = Oiless A-100 psig and 7,0 bar line pressure for imperial and metric data, respectively. B-80 psig and 5,5 bar line pressure for imperial and metric data, respectively. C-60 psig and 4,1 bar line pressure for imperial and metric data, respectively. AIR MOTOR/GEARMOTOR INTRODUCTION G A S T Gast JHF Catalog [ Volume 7 ] (314) 427-0600 800-444-0522 (FAX) 314-427-3502 www. j hf.com 549 Prices Subject to Change Without Notice John Henry Foster pneumatic and hydraulic equipment